Molex 0434590021 Rectangular Connector Header - Equivalent & Substitute Parts

Part Overview

The Molex 0434590021 is a shrouded rectangular connector header designed for through-hole mounting in board-to-board or cable applications. This 10-position, 2-row connector operates at 0.165" (4.20mm) pitch and features push-pull fastening with blind mating capability. The part is classified as obsolete, making identification of active equivalent components essential for ongoing production and maintenance applications. Substitute parts must maintain identical electrical and mechanical specifications to ensure direct interchangeability without circuit redesign.

Substiute Parts

0434590021

MolexIn Stock: 11240434590021 Datasheet

Current PartRFQ

0015246101

MolexIn Stock: 178230015246101 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Molex 0434590021 is determined by strict equivalence across the following critical parameters:

• Connector type (Header) and contact type (Male Pin)
• Position count (10) and row configuration (2 rows)
• Mating pitch and row spacing (0.165" / 4.20mm)
• Mounting method (Through Hole) and termination (Solder)
• Shrouding configuration (Shrouded - 4 Wall)
• Contact material (Brass) and finish (Tin)
• Insulation material (Polyamide PA66, Nylon 6/6)
• Compliance certifications (ROHS3, UL94 V-2)

The Molex 0015246101 qualifies as a direct substitute based on matching all critical parameters. The primary distinction is product status: the 0434590021 is obsolete, while the 0015246101 is active. Secondary differences include fastening type (push-pull versus latch holder) and packaging format, which do not affect electrical or mechanical interchangeability.

Parameter Comparison

Engineering Selection Recommendations

The Molex 0015246101 is the direct substitute for the obsolete Molex 0434590021. Both parts maintain identical electrical and mechanical specifications across all critical parameters, including pitch, position count, contact material, insulation properties, and compliance certifications.

The 0015246101 is classified as active product status, ensuring ongoing availability and supply chain continuity. Both parts carry ROHS3 compliance and UL94 V-2 flammability certification, meeting regulatory requirements for industrial, medical, and telecommunications applications.

The fastening mechanism differs between the two parts: the 0434590021 uses push-pull fastening, while the 0015246101 uses latch holder fastening. This distinction affects mating and unmating procedures but does not impact electrical performance or mechanical fit when properly mated.

Frequently Asked Questions (FAQ)

Q: Can the Molex 0015246101 directly replace the 0434590021 in existing designs?

A: Yes. The 0015246101 matches all critical electrical and mechanical parameters of the 0434590021, including pitch, position count, contact material, insulation properties, and compliance certifications. Direct substitution is supported without circuit redesign.

Q: What is the difference between push-pull and latch holder fastening?

A: Push-pull fastening (0434590021) uses a push-pull mechanism for mating and unmating. Latch holder fastening (0015246101) uses a latching mechanism. Both provide secure mating but differ in operational procedure. The choice depends on application requirements for mating frequency and force.

Q: Are both parts RoHS compliant?

A: Yes. Both the 0434590021 and 0015246101 are ROHS3 compliant and carry UL94 V-2 flammability certification, meeting regulatory requirements for industrial, medical, and telecommunications applications.

Q: What is the packaging difference between these parts?

A: The 0434590021 is supplied in standard packaging, while the 0015246101 is supplied in tray packaging. Packaging format does not affect electrical or mechanical performance.

Q: Why is the 0434590021 classified as obsolete?

A: The 0434590021 has been discontinued by Molex. The 0015246101 is the active equivalent part and is recommended for new designs and ongoing production requirements.

Q: Are the contact specifications identical between both parts?

A: Yes. Both parts feature brass contacts with tin finish at 100.0µin (2.54µm) thickness, square contact shape, and 0.138" (4.60mm) post length. Contact material and finish specifications are identical.